Answer:
I'm sometimes white and always wrong. I can break a heart and hurt the strong. I can build love or tear it down. I can make a smile or bring a frown.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.
My head bobs lazily in the sun. You think I'm cute. For my face is yellow my hair is white and my body is green.
What bird can lift the heaviest weight?
What is often returned but is never borrowed?
I met a man on the London bridge, he tipped his hat and drew his name, in this riddle I told you his name. What is it?